IKT – Institute for Underground Infrastructure

CIPP quality: Lessons learned from 25 years of research and testing

Posted 22. November 2023

Taking a closer look: neutral and independent CIPP tests by IKT

CIPP liner quality: What is the essence of two decades of IKT’s research?

Prof. Dr. Bert Bosseler, our Scientific Director, and colleagues identify the key factors that are crucial for the quality of the world’s most popular rehabilitation process for sewer pipes, Cured-in-Place-Pipes (CIPP).

In a peer-reviewed journal paper we have summarized all our findings. It is a comprehensive compilation of many research projects and many thousands of CIPP tests over the years.

We also highlight the challenges that remain and the key research issues that still need to be resolved.


portrait of Bert Bosseler

Prof. Dr.-Ing. Bert Bosseler, Scientific Director of IKT

Download paper

Read now our findings in this peer-reviewed paper, free for download:

Quality assessment of CIPP lining in sewers:
Crucial knowledge acquired by IKT and research gaps identified in Germany

Bert Bosseler, Dieter Homann, Thomas Brüggemann, Iain Naismith, Matteo Rubinato

published in “Tunnelling and Underground Space Technology”
by Elsevier
January 2024

CIPP Test Center

Find out more on how we test CIPP liner in our test center: IKT’s Test Center for CIPP Liner


Prof. Dr.-Ing. Bert Bosseler
Scientific Director, IKT
T: +49 209 178060
E-mail: bosseler@ikt.institute

Iain Naismith, Ph.D.
Senior Research Fellow, IKT
T: +44 1491 712707
M: +44 7983 605219
E-mail: naismith@ikt.institute



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IKT - Institute for Underground Infrastructure
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T: +49 (0) 209 17806-0
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